Function libesedb_long_value_get_data_segment_size 

pub unsafe extern "C" fn libesedb_long_value_get_data_segment_size(
    long_value: *mut libesedb_long_value_t,
    data_segment_index: c_int,
    data_size: *mut usize,
    error: *mut *mut libesedb_error_t,
) -> c_int

Retrieve the data segment size Returns 1 if successful or -1 on error